//
// Created by deepin on 2020/11/10.
//
#include <iostream>
using namespace std;
const int ArSize = 80;
char * left (const char * str , int n =1);
/*int main ()
{
  char sample[ArSize];
  cout << "Enter a string:\n";
  cin.get(sample,ArSize);
  char*ps = left(sample,4);
  cout << ps <<endl;
  delete [] ps;
  ps = left(sample);
  cout << ps <<endl;
  delete [] ps;
  return 0;
}*/
char * left (const char * str , int n)
{
  if(n<0)
   n=0;
  char *p = new char[n+1];
  int i;
  for(i=0;i<n && str[i];i++)
   p[i]=str[i];
  while(i<=n)
   p[i++] ='\0';
  return p;
}
